Dragend

<div id="dialog"></div>
<script>
$("#dialog").kendoWindow({
  dragend: function() {
    // the user has released the Window after dragging
  }
});
</script>

<div id="dialog"></div>
<script>
function window_dragend() {
  // the user has released the Window after dragging
}
$("#dialog").kendoWindow();
var dialog = $("#dialog").data("kendoWindow");
dialog.bind("dragend", window_dragend);
</script>